<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>盒子模型的演示</title>
    <style type="text/css">
        body{
            margin: 0px auto;
              font-family: 宋体;
            font-size: 12px;
        }

        ul{
            background: #a6e1ec;
            margin:  15px 15px 15px 15px;
            padding:  5px 5px 5px 5px;
        }

        li{
            color: azure;
            background: #a6e1ec;
            margin:  20px 20px 20px 20px;
            padding: 10px 10px 10px 10px;
            list-style: none;
        }

        li.withborder{
            border-style: dashed;
            border-width: 5px;
            border-color: antiquewhite;
            margin-top: 20px;
        }
    </style>
</head>
<body>
<div>
    <ul>
        <li>运营目标</li>
        <li class="withborder">公司运营目标是：质量保证,价格实惠.</li>
    </ul>
    <ul>
        <li>经营原则</li>
        <li class="withborder">公司坚持“.....................”</li>
    </ul>
</div>
</body>
</html>